{
   "$schema":"http://json-schema.org/draft-03/schema#",
   "id":"http://schemas.opengis.net/gsr/1.0/htmlPopup.json",
   "title":"attachment information",
   "type":"object",
   "properties":{
      "htmlPopupType":{
         "title":"popup type",
         "description":"type of the popup; well-known values are: ServerHTMLPopupTypeNone (no popup), ServerHTMLPopupTypeAsURL (content contains a URL) and ServerHTMLPopupTypeAsHTMLText (content contains the HTML text)",
         "type":"string"
      },
      "content":{
         "title":"content",
         "description":"HTML content of the popup, may be HTML text or a URL depending on the htmlPopupType",
         "type":"string"
      }
   }
}